RAF Tholthorpe
Operational units and aircraft

Unit
From
To
Aircraft
Version
No. 420 Squadron RCAF
12 December 1943
12 June 1945
Handley Page Halifax Avro Lancaster
Mk.III (1943-1945) Mk.X (1945)
No. 425 Squadron RCAF
12 December 1943
13 June 1945
Handley Page Halifax Avro Lancaster
Mk.III (1943-1945) Mk.X (1945)
No. 431 Squadron RCAF
15 July 1943
10 December 1943
Handley Page Halifax
Mk.V
No. 434 Squadron RCAF
13 June 1943
11 December 1943
Handley Page Halifax
Mk.V

Question: What operational units took Avro Lancasters until June 1945?
Answer: The No. 420 and 425 Squadrons took Avro Lancasters until June 1945.